B.D. Parmar, and N.G.Parmar. 2015. “Optimization of Fused Deposition Modeling (FDM) Process Parameters for Improving Dimensional Accuracy Using Grey Taguchi Method”. International Journal of Advance Engineering and Research Development (IJAERD) 2 (3):199-203. https://ijaerd.org/index.php/IJAERD/article/view/562.